<template>
  <div style="--header-height: 50px;width: 100%;height: calc(100vh - var(--header-height));overflow: hidden">
    <div style="text-align: center">
      <p style="text-align: center;font-size: 20px;font-weight: bold;margin-top: 10px;">掠空之翼聊天室公告通知</p>
    </div>
    <el-scrollbar height="100%">
      <ul class="timeline">
        <li v-for="(item, index) in notices" :key="item.id">
          <div :class="(index % 2 == 0) ? 'direction-l':'direction-r'">
            <div class="flag-wrapper">
              <span class='hexa'></span>
              <span class="flag">{{ item.name }}</span>
              <span class="time-wrapper">
                <span :class="getNoticeType(item.name)">{{
                  item.createTime.toString().substring(0, 16).replace("T", " ")
                }}</span></span>
            </div>
            <div class="desc" style="text-align: left"><p style="font-weight: bold;text-align: center">发布者:{{
                item.createByName
              }}</p>{{ item.content }}</div>
          </div>
        </li>
      </ul>
    </el-scrollbar>

  </div>

</template>

<script>
import request from "@/utils/request";

export default {
  name: 'Message',
  data() {
    return {
      notices: []
    }
  },
  methods: {
    getNotices() {
      request.get("/notice").then(
          res => {
            this.notices = res.data
          },
          err => {
            console.log(err)
          }
      )
    },
    getNoticeType(name){
      if(name.substring(0, 2) == '重要')
        return 'time importTime'
      if(name.includes("完成"))
        return 'time okTime'
      return 'time'
    }
  },
  mounted() {
    this.getNotices()
  }
}
</script>

<style>
.importTime {
  background-color: #f81b1b !important;
}
.okTime{
  background-color: #38c128 !important;
}


body {
  color: #333;
}

header h1 {
  text-align: center;
  font-weight: bold;
  margin-top: 0;
}

header p {
  text-align: center;
  margin-bottom: 0;
}

.hexa {
  border: 0px;
  float: left;
  text-align: center;
  height: 35px;
  width: 60px;
  font-size: 22px;
  background: #f0f0f0;
  color: #3c3c3c;
  position: relative;
  margin-top: 15px;
}

.hexa:before {
  content: "";
  position: absolute;
  left: 0;
  width: 0;
  height: 0;
  border-bottom: 15px solid #f0f0f0;
  border-left: 30px solid transparent;
  border-right: 30px solid transparent;
  top: -15px;
}

.hexa:after {
  content: "";
  position: absolute;
  left: 0;
  width: 0;
  height: 0;
  border-left: 30px solid transparent;
  border-right: 30px solid transparent;
  border-top: 15px solid #f0f0f0;
  bottom: -15px;
}

.timeline {
  position: relative;
  padding: 0;
  width: 100%;
  margin-top: 20px;
  list-style-type: none;
}

.timeline:before {
  position: absolute;
  left: 50%;
  top: 0;
  content: ' ';
  display: block;
  width: 2px;
  height: 100%;
  margin-left: -1px;
  background: rgb(213, 213, 213);
  background: -moz-linear-gradient(top, rgba(213, 213, 213, 0) 0%, rgb(213, 213, 213) 8%, rgb(213, 213, 213) 92%, rgba(213, 213, 213, 0) 100%);
  background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, rgba(30, 87, 153, 1)), color-stop(100%, rgba(125, 185, 232, 1)));
  background: -webkit-linear-gradient(top, rgba(213, 213, 213, 0) 0%, rgb(213, 213, 213) 8%, rgb(213, 213, 213) 92%, rgba(213, 213, 213, 0) 100%);
  background: -o-linear-gradient(top, rgba(213, 213, 213, 0) 0%, rgb(213, 213, 213) 8%, rgb(213, 213, 213) 92%, rgba(213, 213, 213, 0) 100%);
  background: -ms-linear-gradient(top, rgba(213, 213, 213, 0) 0%, rgb(213, 213, 213) 8%, rgb(213, 213, 213) 92%, rgba(213, 213, 213, 0) 100%);
  background: linear-gradient(to bottom, rgba(213, 213, 213, 0) 0%, rgb(213, 213, 213) 8%, rgb(213, 213, 213) 92%, rgba(213, 213, 213, 0) 100%);
  z-index: 5;
}

.timeline li {
  padding: 2em 0;
}

.timeline .hexa {
  width: 16px;
  height: 10px;
  position: absolute;
  background: #00c4f3;
  z-index: 5;
  left: 0;
  right: 0;
  margin-left: auto;
  margin-right: auto;
  top: -30px;
  margin-top: 0;
}

.timeline .hexa:before {
  border-bottom: 4px solid #00c4f3;
  border-left-width: 8px;
  border-right-width: 8px;
  top: -4px;
}

.timeline .hexa:after {
  border-left-width: 8px;
  border-right-width: 8px;
  border-top: 4px solid #00c4f3;
  bottom: -4px;
}

.direction-l,
.direction-r {
  float: none;
  width: 100%;
  text-align: center;
}

.flag-wrapper {
  text-align: center;
  position: relative;
}

.flag {
  position: relative;
  display: inline;
  background: rgb(255, 255, 255);
  font-weight: 600;
  z-index: 15;
  padding: 6px 10px;
  text-align: left;
  border-radius: 5px;
}

.direction-l .flag:after,
.direction-r .flag:after {
  content: "";
  position: absolute;
  left: 50%;
  top: -15px;
  height: 0;
  width: 0;
  margin-left: -8px;
  border: solid transparent;
  border-bottom-color: rgb(255, 255, 255);
  border-width: 8px;
  pointer-events: none;
}

.direction-l .flag {
  -webkit-box-shadow: -1px 1px 1px rgba(0, 0, 0, 0.15), 0 0 1px rgba(0, 0, 0, 0.15);
  -moz-box-shadow: -1px 1px 1px rgba(0, 0, 0, 0.15), 0 0 1px rgba(0, 0, 0, 0.15);
  box-shadow: -1px 1px 1px rgba(0, 0, 0, 0.15), 0 0 1px rgba(0, 0, 0, 0.15);
}

.direction-r .flag {
  -webkit-box-shadow: 1px 1px 1px rgba(0, 0, 0, 0.15), 0 0 1px rgba(0, 0, 0, 0.15);
  -moz-box-shadow: 1px 1px 1px rgba(0, 0, 0, 0.15), 0 0 1px rgba(0, 0, 0, 0.15);
  box-shadow: 1px 1px 1px rgba(0, 0, 0, 0.15), 0 0 1px rgba(0, 0, 0, 0.15);
}

.time-wrapper {
  display: block;
  position: relative;
  margin: 4px 0 0 0;
  z-index: 14;
  line-height: 1em;
  vertical-align: middle;
  color: #fff;
}

.direction-l .time-wrapper {
  float: none;
}

.direction-r .time-wrapper {
  float: none;
}

.time {
  background: #00c4f3;
  display: inline-block;
  padding: 8px;
}

.desc {
  position: relative;
  margin: 1em 0 0 0;
  padding: 1em;
  background: rgb(254, 254, 254);
  -webkit-box-shadow: 0 0 1px rgba(0, 0, 0, 0.20);
  -moz-box-shadow: 0 0 1px rgba(0, 0, 0, 0.20);
  box-shadow: 0 0 1px rgba(0, 0, 0, 0.20);
  z-index: 15;
}

.direction-l .desc,
.direction-r .desc {
  position: relative;
  margin: 1em 1em 0 1em;
  padding: 1em;
  z-index: 15;
}

@media (min-width: 768px) {
  .timeline {
    width: 660px;
    margin: 0 auto;
    margin-top: 20px;
  }

  .timeline li:after {
    content: "";
    display: block;
    height: 0;
    clear: both;
    visibility: hidden;
  }

  .timeline .hexa {
    left: -28px;
    right: auto;
    top: 8px;
  }

  .timeline .direction-l .hexa {
    left: auto;
    right: -28px;
  }

  .direction-l {
    position: relative;
    width: 310px;
    float: left;
    text-align: right;
  }

  .direction-r {
    position: relative;
    width: 310px;
    float: right;
    text-align: left;
  }

  .flag-wrapper {
    display: inline-block;
  }

  .flag {
    font-size: 18px;
  }

  .direction-l .flag:after {
    left: auto;
    right: -16px;
    top: 50%;
    margin-top: -8px;
    border: solid transparent;
    border-left-color: rgb(254, 254, 254);
    border-width: 8px;
  }

  .direction-r .flag:after {
    top: 50%;
    margin-top: -8px;
    border: solid transparent;
    border-right-color: rgb(254, 254, 254);
    border-width: 8px;
    left: -8px;
  }

  .time-wrapper {
    display: inline;
    vertical-align: middle;
    margin: 0;
  }

  .direction-l .time-wrapper {
    float: left;
  }

  .direction-r .time-wrapper {
    float: right;
  }

  .time {
    padding: 5px 10px;
  }

  .direction-r .desc {
    margin: 1em 0 0 0.75em;
  }
}

@media (min-width: 992px) {
  .timeline {
    width: 800px;
    margin: 0 auto;
    margin-top: 20px;
  }

  .direction-l {
    position: relative;
    width: 380px;
    float: left;
    text-align: right;
  }

  .direction-r {
    position: relative;
    width: 380px;
    float: right;
    text-align: left;
  }
}
</style>